Over the past decades, sea ice ______in the Arctic as a result of global warming.
Neither my father nor my brothers ______ the symbol.
This book can be used in ________ countries.
. After school, the students came home, ________.
. I forgot ________ my exercise-book with me, so I can’t lend it to you now.
Tom dropped in to see us on his way ________ home from the theater.